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Emerson Sensi Thermostat

Availability: In stock


Regular Price: $125.00

Your Price $25.00



Product Features

Low profile

Sleek, minimalist design looks great on your wall.

Traditional footprint

Takes up the same space as a traditional thermostat so you don’t have to patch your wall or paint.

Humidity reading

Featured on-screen to keep you fully aware of your home’s conditions.


Perfect for night time or low lighting.


Check the time when you check the temperature.

HVAC Compatibility

Use the compatibility checker below to determine if Sensi will work in your home:

Smart Home Compatibility

Sensi work with Apple HomeKit, Google Assistant, Amazon Alexa, Samsung SmartThings, and Wink.


Easy DIY installation

You can feel confident and comfortable about installing Sensi yourself. No experience required. Our easy-to-use app will walk you through the step-by-step process quickly.

Download the Sensi App

Our thoughtfully designed app will be your guide through installation process. Be sure to download the Sensi app before getting started.

Video Tutorial

Our quick installation and connection overview video shows how easy it really is.



Part # R5000.46
Manufacturer Model St55U
Single-Stage Heat/Cool Yes
Two-Stage Heating/Cooling Yes
Line Voltage Heating No
Wi-Fi Enabled Yes
Self-Learning No
Warranty (Years) 3

Customer Reviews 2 item(s)

Thank You Ameren!
I have had this thermostat installed for over a year and have not had a single issue with it. Installation was simple, just do yourself a favor and take a pic of the wires connected to your old one for reference. Major Kudos to Ameren for offering such an AMAZING deal on these smart thermostats. Review by Kris W / (Posted on 8/20/2020)
Well worth it! Easy to install. Can manage from phone. Very nice thermostat.
Very nice thermostat. Was easy to install and can manage from my phone. Love it. Just a great deal and well worth it. Review by Dennis / (Posted on 6/18/2020)

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